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Beyond Prime Day: Save up to 60% on eyeglasses at GlassesUSA

You can get a new pair of glasses -- or refer a friend and get $100 to spend at Amazon if they take the plunge.

Eyeglasses on sale at GlassesUSA
With huge selection and free shipping and returns, GlassesUSA is currently having a huge sale.

This story is part of Amazon Prime Day, CNET's guide to everything you need to know and how to find the best deals.

GlassesUSA ranks among our favorite places online to buy eyeglasses, and the online eyeglass retailer is having a big slate of sales -- with a Prime Day tie-in. Now, there are quite a few codes in play here, but they'll save you between 25 and 60%. 

  • Use code DEAL60 to save up to 60% on basic prescriptions.
  • Use code LENSES50 to get up to 50% off an upgrade to your lenses (polarized, mirrored, tinted, transitions). 
  • Use code PREMIUM25 to get up to 25% off certain designer brands.
  • Use code BOGOFREE to buy one, get one (offer can include one set of premium frames).
  • Use code SUN10 for 10% off all sunglasses.
  • Use code CONTACTS25 for 25% off contact lens orders.

The number of available promotions are a bit dizzying so to make sure you're not leaving money on the table be sure to check out their full page of coupon codes.

The cherry on top? If someone you know may be in need of a new set of specs, you're in luck as they are currently offering a $25 Amazon credit for anyone who refers a friend (conditions apply). Tempting -- and just in time for Prime Day.

With a handy photo-uploader tool to view how different frames will look on your face and thousands of selections to choose from, this is a fun place to shop. They offer free shipping, and you have 14 days to return your order for a full refund. There is a 1 year manufacturer's warranty on all glasses ordered.

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